SU1717701A1 - Method of construction of embedded hydraulic structure - Google Patents

Abstract

The invention relates to hydraulic construction and relates to the construction of structures by the descending method in complex geological conditions from the pacmSopo-pump. The purpose of the invention is to increase the reliability of construction and reduce construction costs. In the soil mass 1, in a known manner, an annular trench 2 is formed below the structure level with filling with anti-filtration material 3. Then the internal volume of the structure is separated from the soil mass 1 by filling the soil pores within the internal contour 4 of the structure in the interval from the bottom mark 5 of the trench 2 to the lower level of the bottom by injection through successively submersible injectors 8. At the same time, trenching 2 of the hardening races is introduced into the impervious to material 3 on the interval from the upper level of the bottom to the lower level 5 of the trench 2 with the injector 10, and when injecting the injector 10 reported transverse vibration. 2 hp f-ly, 4 ill. & n rastbero-asos (L S

Description

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ABOUT

The invention relates to hydraulic construction and relates to the construction of structures by the descending method in difficult hydrogeological conditions.

The purpose of the invention is to increase the reliability of construction and reduce construction costs.

Fig. 1 shows a schematic diagram of the implementation of the proposed method for constructing a buried hydraulic structure at the time of separating the internal volume of the structure from the soil mass from below, a longitudinal section; figure 2 - the same, at the end of this process; fig. 3 - the same after immersion of the shell; Fig. 4 is the same after the construction of the bottom of the structure.

The method of construction of the buried hydraulic structure according to the invention is implemented as follows.

In the soil mass 1, a known method forms an annular trench 2 below the level of the structure with filling it with antifiltration material 3. Then the internal volume of the structure is separated from the soil mass 1 by filling the soil pores within the internal contour 4 of the structure at an interval from the bottom mark 5 trenches 2 up to the bottom mark 6 of the bottom 7 using injection through successively submerged injectors 8. At the same time, trench 2 of the hardening solution is introduced into the impervious material 3 in the interval from the upper mark 9 of the bottom 7 to the lower mark 5 of the trench 2 using the injector 10. When injecting, the injector 10 is reported to have transverse vibration. After the injection is completed, the shell 11 is mounted on the surface, installed on the linings 12, and after the installation is completed, the shell 11 is immersed as the soil is mined. When the knife part of the shell 11 reaches the top mark 9 of the bottom 7, the shell 11 is braked using a hardening solution introduced into the impervious material 3 of the ring trench 2 for this purpose.

When transverse vibration is communicated to the injector 10, the amplitude of this vibration can be assigned within 2–20 linear dimensions of the soil grains of array 1. Filling the pores can be done in two stages, the first of which is injected with an impervious material, and the second is hardening material.

With the introduction of a 3 trenching solution 2 hardening solution into the impervious to the material

they can evenly increase from the soft plastic consistency of the mixture obtained at the level of the upper mark 9 of the bottom 7 to the solid consistency on the lower mark of it 6.

An example of the implementation of a method for constructing a submerged hydraulic structure can be a structure with the following geometric characteristics: a shell diameter of 15 m; depth of construction 10 m: shell thickness 500 mm; ring trench depth 18 m; ring trench width 600 mm.

Claims (3)

Invention Formula 51. The method of construction of the recessed hydrotechnical structure, which includes separating the internal volume of the structure from the soil massif by forming an annular trench below the level of the structure with filling it with an impervious material, immersing the shell as the soil develops in the bottomhole and braking at the bottom level, that in order to increase 5 construction reliability and reduction of construction costs, separation of the internal volume of the structure from the soil mass from below is performed by filling the soil pores within the internal contour of the structure from the lower trench mark to the lower bottom mark by injection through successively injectors, and braking carried out by introducing 5 the impervious material of the ring trench of the hardening solution in the interval from the upper level of the bottom to the lower level of this trench, and when injected into the injector, transverse vibration is reported. 2. A method according to claim 1, characterized in that the amplitude of the transverse vibration of the injector is set within 2 to 20 linear dimensions of the grains of the soil of the array, 5 wherein the pores are filled in two stages, in the first of which the injection is carried out with an anti-filtration material, and in the second with a hardening material. 0 3. A method of building a buried hydraulic structure according to claims 1 and 2, characterized in that when the ring trench of the hardening mortar is introduced into the impervious material, the amount of the latter uniformly increases from the soft plastic consistency of the resulting mixture at the upper bottom level to a solid consistency his bottom mark. YuSha 0 "g. #